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ドメイン・ファーストで考える問題解決に役立つモデル設計 / Domain First Mode...
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suzushin54
March 24, 2024
Programming
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ドメイン・ファーストで考える問題解決に役立つモデル設計 / Domain First Model Design
Object-Oriented Conference 2024 の登壇資料です。
suzushin54
March 24, 2024
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Transcript
Shinichiro υϝΠϯɾϑΝʔετͰߟ͑Δ ղܾʹཱͭϞσϧઃܭ Object-Oriented Conference 2024 #ooc_2024
👨💻 whoami Intro • Shinichiro Mikami • ϕʔεϑʔυגࣜձࣾ 🍞 •
γχΞιϑτΣΞΤϯδχΞ • ܦྺɿSIer -> ࣄۀձࣾ ࣾ • Gopher ʕ◔ϖ◔ʔ 2 mikami.bsky.social suzushin54
🗣 ࠓճͷτʔΫʹ͍ͭͯ Intro • γεςϜ։ൃͷݱʹ͓͍ͯɺ“Ϟσϧ” ͕ᐆດʹѻΘΕ͍ͯΔͱײ͡Δ • ϞσϧΛదʹઃܭɾ࣮͢Δ͜ͱɺڝ૪ྗͷݯઘͱͳΔ • ༗໊ͳઃܭݪଇ։ൃख๏ɺΑ͘ݟฉ͖͢ΔɻԿΒ͍͍ͷΒ͍͠
• ຊʹͦ͏ͳͷ͔ʁΈΜͳෲམ͍ͪͯͬͯ͠ΔͷͩΖ͏͔ʁ • ͦ͜Ͱ͜Ε·Ͱʹ໘ͨ͠Ϟσϧʹؔ͢Δ՝ΞϯνύλʔϯΛ֬ೝ • ղܾʹཱͭϞσϧͱɺͲͷΑ͏ͳͷ͔ʁΛߟ • ࣄͷઆ໌ίʔυͷஅยͷհʹཹΊΔ͜ͱͳ͘ɺ ͳͥෳࡶ͕ͭ͘͞ΒΕͯ͠·͏ͷ͔ɺܦҢྲྀΕͱڞʹݟ͍ͯ͘ 3
🙊 ຊͷ༰ʹ͍ͭͯ Intro • ్தల։͢Δ EC αΠτͷྫՍۭͷͰ͋Γɺॴଐ͢Δاۀͷࣄۀ ίʔυϕʔεͱҰؔ͋Γ·ͤΜ • ݶΒΕͨ࣌ؒͳͷͰɺؔ࿈͢ΔίϯηϓτΛཏతʹΧόʔ͢Δ͜ͱ
Ͱ͖·ͤΜʢগɺྫ֎తͳέʔεͳͲ৮Ε͍ͯ·ͤΜʣ • ݸผͷϓϥΫςΟεͷྑ͠ѱ͠Λͨ͡Γ൷ධ͢ΔͷͰ͋Γ·ͤΜ 4
Agenda • ϞσϧͱԿ͔ʁ • ιϑτΣΞ։ൃͰѻΘΕΔϞσϧ • EC αΠτͷ۩ମྫ • ઓज़తϓϩάϥϛϯά
• ઓུతϓϩάϥϛϯά • ·ͱΊ 5 🔖 ຊͷ༰ʹ͍ͭͯ
ϞσϧͱԿ͔ʁ
📝 Ϟσϧͱʁ Intro 7 https://www.agilealliance.org/resources/experience-reports/towards-autonomous-aligned-teams-with-domain-driven-design/ Ϟσϧͱɺ͋Δࣄݱͷ୯७Խ͞ΕͨදݱͰ͋Γɺ ҙਤతʹಛఆͷଆ໘Λڧௐ͠ɺଞͷଆ໘Λແࢹͨ͠ͷɻ ಛఆͷ༻్Λߟྀͨ͠நԽɻ “A model
is a simplified representation of a thing or phenomenon that intentionally emphasizes certain aspects while ignoring others. Abstraction with a specific use in mind.” - Rebecca Wires-Brock ※ ҙ༁ͨ͠ͷ ࢀߟ:ʰLearning Domain-Driven Designʱ
Intro 8 https://www.marathon.tokyo/en/media/press-release/pdf/230621_release_en.pdf https://www.tokyometro.jp/station/pdf/202305/202305_number_en.pdf ͦΕͧΕͷతͷͨΊʹɺ ಛఆͷଆ໘Λڧௐͨ͠Γɺແࢹ͍ͯ͠Δ 🗾 యܕతͳϞσϧͷྫਤ
✅ Ϟσϧݱ࣮ੈքͷࣄࣄͷίϐʔͰͳ͍ Intro • ͯ͢ͷϞσϧʹʮతʯ͕͋ΓɺͦͷୡʹඞཁͳใͷΈΛؚΉ • ຊ࣭తʹɺϞσϧԽநԽͰ͋Δ • ෆඞཁͳࡉ෦লུͯ͠ɺղܾʹඞཁͳͷ͚ͩΛ͢ •
ʢOOP ͷΫϥεͷઆ໌ʹʮࣸ૾ʯͱ͍͏ݴ༿͕ΘΕΔ͜ͱ͕͋Γɺ ɹ͜ΕޡղΛট͘දݱͰ͋Δͱߟ͍͑ͯ·͢ʣ • நԽͷతɺᐆດʹ͢Δ͜ͱͰͳ͍ • ͋Δ࣮ମΛ؆ུԽͯ͠ɺॏཁͰͳ͍ৄࡉΛলུͨ͠ͷ • ෳࡶͳͷʹ͍ͭͯߟ͑ͨΓૢ࡞ͨ͠Γ͢ΔͷΛ༰қʹ͢Δ 9
ιϑτΣΞ։ൃͰ ѻΘΕΔϞσϧ
σʔλϞσϧ Ϟσϧʹ͍ͭͯ • σʔλͷߏɺؔੑɺ͓ΑͼϧʔϧΛମܥతʹఆٛͨ͠Έ • ≒ ER ਤ ͱͯ͠ೝࣝ͞Ε͍ͯΔ 11
ࢀߟ:ʰγεςϜ։ൃɾ৽ͷͨΊͷσʔλϞσϧେશ ʱ ୈ1ষ
υϝΠϯϞσϧ Ϟσϧʹ͍ͭͯ • ۀυϝΠϯʹಛԽͨ͠ιϑτΣΞϞσϧͷ͜ͱ • ΦϒδΣΫτϞσϧͱ࣮ͯ͠͞ΕΔ͜ͱ͕ଟ͘ɺ ѻ͏σʔλৼΔ͍Λɺۀతʹਖ਼֬ͳҙຯ߹͍Ͱอ࣋͢Δ 12 ࢀߟ:ʰ࣮ફυϝΠϯۦಈઃܭʱ -
υϝΠϯϞσϧͱ 👉 σʔλͷߏؔੑʹͨ͠σʔλϞσϧͱҟͳΓɺ γεςϜ͕ରͱ͢ΔྖҬͷใʹϑΥʔΧε͍ͯ͠Δ நԽ͞ΕͨϞσϧ͕࣮͞Εͯ υϝΠϯΦϒδΣΫτͱͳΔ
υϝΠϯΦϒδΣΫτ Ϟσϧʹ͍ͭͯ • όʔτϥϯυɾϝΠϠʔΦϒδΣΫτͷݪଇͱͯ͠ɺ ʮͯ͢ͷΦϒδΣΫτԿΒ͔ͷΫϥεͷΠϯελϯεͰ͋Δɻʯͱ ఆ͍ٛͯ͠Δ ※ Go ݴޠͳͲΫϥεߏΛ࣋ͨͳ͍͕ɺҟͳΔํ๏Ͱ OOP
Λ࣮ݱ͍ͯ͠ΔͨΊɺ͜͜Ͱ͡ͳ͍ • DTO ͷΑ͏ʹ୯ʹσʔλΛอ࣋͢Δ͚ͩͰͳ͘ɺͦͷσʔλʹؔ࿈͢ ΔৼΔ͍ʢϝιουɾؔʣ߹Θͤͯ࣋ͭʢநσʔλܕʣ 13 ࢀߟ:ʰΦϒδΣΫτࢦೖ ୈ2൛ ݪଇɾίϯηϓτʱ 👉 ΦϒδΣΫτࢦϓϩάϥϛϯάͷಛੑΛ׆͔ͨ͠ϓϥΫςΟε ͔͠͠ɺ։ൃͷݱʹ͓͍ͯᐆດʹଊ͑ΒΕΔ͜ͱଟ͍
σʔλϞσϧͱυϝΠϯϞσϧͷҧ͍͕ᐆດʹͳΔݪҼͷߟ Ϟσϧʹ͍ͭͯ 1. DB ઃܭ͔Β࢝ΊΔ։ൃΞϓϩʔν • DB ઃܭΛߦ͍ɺσʔλΛ֨ೲ͠ɺͦΕΛѻ͏࣮Λͯ͠͠·͏ 2. ORMͷར༻ʢ
※ Active Record ύλʔϯʣ • DB ͷϨίʔυΛϥοϓͨ͠ΦϒδΣΫτDB ΞΫηεͱυϝΠϯϩδοΫΛ࣋ͭ 3. εΩʔϚۦಈ։ൃͷҰൠԽͷӨڹ • Ϧιʔεʹର͢ΔCRUD ૢ࡞͕ڧௐ͞ΕɺΑΓσʔλʹҙ͕ࣝҾ͖دͤΒΕΔ ʢϦιʔεࢤͰ͋Δ REST API ಛʹݦஶʣ 4. ։ൃऀͷυϝΠϯࣝෆ • Ϗδωεϧʔϧۀ্ൃੜ͢ΔΠϕϯτΛੳͰ͖͍ͯͳ͍ͨΊɺ طʹݟ͍͑ͯΔϦιʔεҎ֎ͷϞσϧΛఆٛͰ͖ͳ͍ • ͜͜·ͰͰΠϯλʔϑΣΠε͕ݻ·͓ͬͯΓɺͦΕͰ࣮Ͱ͖ͯ͠·͏ 14 ※ https://www.martinfowler.com/eaaCatalog/activeRecord.html
υϝΠϯϞσϧͷॏཁੑ Ϟσϧʹ͍ͭͯ • ͦͦɺϏδωεϩδοΫຊ࣭తʹෳࡶͳͷ • ͦͷෳࡶ͞Λཧ͠ɺڞ௨ͷཧղΛଅਐ͢Δ • Ϗδωεϧʔϧͷ໌֬Խ • υϝΠϯϨΠϠʔͰҰݩཧ͢Δ͜ͱͰɺҰ؏ੑΛอূͰ͖Δ
…etc 15 👉 ϏδωεͷܧଓతͳվળͱΛࢧԉ͢ΔͨΊʹॏཁ
EC αΠτͷ۩ମྫ
ECαΠτ: OOC Shop Online ͷ։ൃ EC αΠτͷ۩ମྫ • Սۭͷձࣾ OOC
inc. ͰɺECαΠτΛ։ઃ͢Δ͜ͱʹɻ • ωοτγϣοϓͷ࡞αʔϏεΛ͏Ҋ͕͋ͬͨɺ ΧελϚΠζੑΛٻΊͯ։ൃΛܾஅ • PjM ͱϑϩϯτΤϯυΤϯδχΞ, όοΫΤϯυΤϯδχΞͷ3ਓͰ։ൃΛ։࢝ 17
ٕज़ελοΫͱΞʔΩςΫνϟ EC αΠτͷ۩ମྫ • C#, ASP.NET • REST API •
Layered Architecture • Repository pattern (DIP) • RDB 18 Controller ApplicationService Domain Infrastructure DB
ੜ AI ΛશྗͰ׆༻ͨ͠։ൃ EC αΠτͷ۩ମྫ • ཁ݅ͱઃܭํΛ AI ʹ͑ɺ രͰ։ൃΛਐΊ͍ͯ͘
• ػೳཁ݅Λຬͨ͢γεςϜ ͋ͬͱ͍͏ؒʹ✨ 19
1ޙ 1 year later
🎉 OOC Shop ઈௐʂ EC αΠτͷ۩ମྫ • ૣΊͷϚʔέοτΠϯ͕ޭΛ͠ɺചΓ্͛ௐ • 1पه೦Ωϟϯϖʔϯɺେޱސ٬͚ͷ։ൃҊ݅Ͱେ͠
• ΤϯδχΞ૿һͯ͠ɺଓʑͱՃ։ൃ͕ߦΘΕ͍ͯ͘ 21
3ޙ 3 year later
⚡ Ӣߦ͖͕ո͘͠ͳͬͯͨ EC αΠτͷ۩ମྫ • ECαΠτͷੑೳྼԽ͕ݦஶʹɻCore Web Vitals ͷείΞௐ •
ػೳՃͷམ͖ͪͯͯɺڝ߹ଞࣾͱൺͯػೳམཱ͕ͪͭ • ίʔυϩδοΫ͕ෳࡶԽ͠ɺΤϯδχΞ͔Βٕज़తෛ࠴ͷ͕ • ͦΜͳ࣌ɺෆ۩߹͕ݪҼͱͳΓ SNS ͰԌ্͢Δࣄ͕݅ൃੜ 🔥 • νʔϜҰཱͪࢭ·Γɺઃܭ࣮Λݟ͢͜ͱʹͨ͠🕵 23
վળͷಓے
ॳͷυϝΠϯͱαϒυϝΠϯͷཧղ վળͷಓے 25 Λจ͍ͨ͠ • ͡ΊʮΛചΔͨΊͷ EC αΠτʯΛ࡞Δ͜ͱ͚ͩΛߟ͍͑ͯͨ • ͦͷͨΊɺγεςϜͷͷར༻ऀ͚ͩʹ͍ͯͨ͠
EC system จ 👤 👩🏭 ސ٬ ࡏݿ Λݟ͍ͨ ࡏݿཧ ൃૹ αϓϥΠ νΣʔϯ
αϒυϝΠϯͷൃݟͱཧղ վળͷಓے 26 Ϧʔυ֫ಘࢪࡦ EC system จ Χλϩά ίϯςϯπཧ ސ٬ཧ
ࡏݿཧ 👨💻 👩💻 🧑💻 👩🏭 Ϛʔέ จ 👤 ސ٬ ݟΔ Ωϟϯϖʔϯ Ϋʔϙϯ ΤϯδχΞ ӡ༻อक ΧελϚʔ αϙʔτ αϓϥΠ νΣʔϯ ࡏݿཧ ൃૹ αϙʔτ • γεςϜͰͳ͘ɺϏδωεͷ؍͔Βੳͨ͠͠ • ૢ࡞͢ΔҎ֎ʹɺ࣮ࡍʹଟ͘ͷࣄۀ׆ಈྖҬ͕ଘࡏ͢Δ͜ͱʹؾͮ͘ ϩόετωεੳ, Πϕϯτετʔϛϯά …etc
αϒυϝΠϯʹରԠ͢Δڥք͚ͮΒΕͨίϯςΩετͷઃܭ վળͷಓے 27 Ϧʔυ֫ಘࢪࡦ EC system จ Χλϩά ίϯςϯπཧ ސ٬ཧ
ࡏݿཧ 👨💻 👩💻 🧑💻 👩🏭 Ϛʔέ จ 👤 ސ٬ ݟΔ Ωϟϯϖʔϯ Ϋʔϙϯ ΤϯδχΞ ӡ༻อक ΧελϚʔ αϙʔτ αϓϥΠ νΣʔϯ ࡏݿཧ ൃૹ αϙʔτ • ࣄۀ׆ಈྖҬʹରԠ͢ΔܗͰαϒγεςϜΛݕ౼ • ࠓճશʹ 1:1 ͰରԠ͢ΔΑ͏ʹ Ordering context Catalog context Inventory context Support context CMS context
ׂ݉ͷ Product Ϟσϧ վળͷಓے • ࠶ઃܭޙʹվΊͯݟΔͱɺ จ຺ͷࠞࡏΛೝࣝͰ͖ͨ • ෳͷΛ࣋ͬͨ͜ͱͰɺ Fat
Model ʹͳͬͯ͠·͍ͬͯͨ 28 👈 Inventory EC system Product 👈 Catalog 👈 Ordering 😵💫
վળޙͷ Product Ϟσϧ վળͷಓے 29 EC system Ordering context Catalog
context Inventory context Support context CMS context Product • Catalog context ͱͯ͠ඞཁͳ ଐੑɾৼΔ͍ʹݶఆ
Ordering context ઐ༻ͷϞσϧ վળͷಓے 30 EC system Ordering context Catalog
context Inventory context Support context CMS context OrderProduct Product • αϓϥΠνΣʔϯͷ୲ऀʮจʯͱݺΜͰ͍ͨ • OrderProduct ͱͯ͠ఆٛͨ͠ • ׂ͕໌֬ʹ͢Δ͜ͱͰݟ௨͕͠ ྑ͘ͳΓɺςετ༰қੑ্
վળલͷ Customer Ϟσϧ վળͷಓے • SNS Ԍ্ࣄ݅ͷݪҼɺαϙʔτͷϝϞ͕ސ٬ͷϚΠϖʔδͰ ϒϥβͷ։ൃऀπʔϧʹදࣔ͞Εͯ͠·͍ͬͯͨ͜ͱͱ໌ • 1ͭͷڥք͚ΒΕͨίϯςΩετ͓ΑͼυϝΠϯϞσϧΛෳνʔϜ͕ϝϯς͍ͯͨ͠
31 👤 ސ٬ 🧑💻 ΧελϚʔ αϙʔτ ߹͕ͤଟ͍ސ٬Λ ʮཁҙ٬ʯͱϝϞ { "mypage": { "customer": { "name": "John Doe", "email": "
[email protected]
", "address": "123 Main Street, Anytown, CA", "orders": null, "rank": 3, "memo": "ཁҙ٬", "inquiryCount": 13, "lastLogin": "2024-03-23T18:40:58" } 😡 API શͯͷ߲Λฦ͍ͯͨ͠
ReadModel ͷಋೖʢCQRSʣ վળͷಓے 32 • ސ٬ͷϚΠϖʔδʹඞཁͳใͷΈ Λอ࣋ͨ͠ ReadModel Λઃܭͨ͠ •
ϦʔυϞσϧͷ݅ • QueryMethodͷΈΛ࣋ͭ (ΠϛϡʔλϒϧͰ͋Δ) • ͋ΔϢʔεέʔεʹಛԽ͍ͯ͠Δ • ඞཁͳσʔλ͕ΦϒδΣΫτऔಘ࣌ ʹར༻ՄೳͰ͋Δ͜ͱ Controller Domain Infrastructure Customer ApplicationService Customer MyPage ࢀߟɿʰΦϒδΣΫτઃܭελΠϧΨΠυʱ
33 ReadModel ͷಋೖʢCQRSʣ վળͷಓے ϚΠϖʔδදࣔʹ ඞཁͳσʔλͷΈ Customer Ϟσϧ CustomerMyPage Ϟσϧ
• දࣔͷͨΊ͚ͩͷଐੑৼΔ͍ΛυϝΠϯϞσϧ͔ΒऔΓআ͘͜ ͱ͕Ͱ͖ɺ͞Βʹݟ௨͕͠ྑ͘ͳͬͨ ૯จճͳͲಋग़͍ͯͨ͠ ใ࠷ॳ͔Β࣋ͨͤΔ
ಉ͡աͪΛ܁Γฦ͞ͳ͍ͨΊʹ վળͷಓے • νʔϜۀΛੳ͢Δ͜ͱͰ • ͕͖ࣗͨͪ߹͍ͬͯͨࣄۀྖҬɺͦͷதͷ׆ಈྖҬΛཧղͨ͠ • ׆ಈྖҬʹରԠ͢ΔܗͰαϒγεςϜΛઃܭɺ ϦϑΝΫλϦϯάʹΑΓ៉ྷͳίʔυΛऔΓͨ͠ •
͔͠͠ɺίʔυϕʔε͕มΘ͚ͬͨͩͰ ͕࣌ؒܦͯ·ͨෳࡶੑʹ·͞Εͯ͠·͏ • ։ൃͷΞϓϩʔνΛม͑Δඞཁ͕͋ͬͨ 34
ઓज़తϓϩάϥϛϯά Tactical Programming
ઓज़తϓϩάϥϛϯάͱͲͷΑ͏ͳͷ͔ ઓज़తϓϩάϥϛϯά • ػೳΛಈ࡞ͤ͞Δ͜ͱʹযΛͯͨϓϩάϥϛϯάͷ͜ͱ • ʮԿΛղܾ͍ͨ͠ͷ͔ʯͰͳ͘ɺ ʮͲ͏͢Ε࣮ݱͰ͖Δͷ͔ʯͱߟ͑ͯ͠·͏ • طʹ͋ΔϦιʔεΛݩʹԿͱ͔͠Α͏ͱ͢Δ •
ٕज़తͳղܾํ๏ͷؔ৺ҰҼ • ʮఆظόονͰಉظ͢Δඞཁ͕͋ΔͷͰ…ʯ🤔 36 ࢀߟ: ʰA Philosophy of Software Designʱ 👉 ઓज़తϓϩάϥϛϯάͷੵΈॏͶ͕ෳࡶ͞ΛੜΉ
ઓज़తϓϩάϥϛϯάͷྫ 1 - খنͷվम ઓज़తϓϩάϥϛϯά • ཁ݅ɿ৽ΛఆՁͷ10%Ҿ͖Ͱൢച͠·͢ • ΤϯδχΞɿ •
Product ʹ IsNewRelease ϑϥάΛ͚ͭͯɺtrue ͩͬͨΒׂҾ͠Α͏ • Products ςʔϒϧʹΧϥϜΛՃͯ͠ • Product Ϟσϧʹ bool ͷϓϩύςΟΛՃ͢Ε OK 37
ઓज़తϓϩάϥϛϯάͷྫ 2 - ػೳՃ ઓज़తϓϩάϥϛϯά • ཁ݅ɿͷϨϏϡʔػೳΛՃ͠·͢ • ΤϯδχΞɿ •
ProductReviews ςʔϒϧΛ࡞Ζ͏ • ProductId Λ֎෦Ωʔͱͯ࣋ͬͯ͠ඥ͚ͮΔ • Product Ϟσϧʹ Reviews ྻΛՃͯ࣋ͨͤ͠Ε͍͍ 38
ઓज़తϓϩάϥϛϯάΛՃͤ͞Δ AI ʹΑΔ։ൃ ઓज़తϓϩάϥϛϯά • ͜ͷ࣌ɺΤϯδχΞ ੜ AI ʹؙ͓͛ͯ͠Γɺ ಛʹԿߟ͍͑ͯͳ͔ͬͨ
39 Generative AI
ઓज़తϓϩάϥϛϯάͷ݁Ռ ઓज़తϓϩάϥϛϯά • ͱ͍͑ɺͲͪΒͦͷ͕࣌͋ΔΑ͏ʹࢥ͑ͳ͍͔͠Εͳ͍ • ͦͯ͠ɺϦϦʔε͞ΕΔͱ࣮ࡍʹՁੜΈग़͢ • ͔͠͠ɺͦͷੵΈॏͶ͕ෳࡶ͞Λ࡞Γ্͍͛ͯ͘ • ͰɺͲ͏͢Δ͖ͳͷ͔ʁ
40
ઓུతϓϩάϥϛϯά Strategic Programming
ઓུతϓϩάϥϛϯάͱͲͷΑ͏ͳͷ͔ ઓུతϓϩάϥϛϯά • ػೳΛಈ࡞ͤ͞Δ͜ͱΛୈҰͷඪʹ͢ΔͷͰͳ͘ɺ ͍͔ͭ͘ͷઃܭΛࢼͯ͠࠷ΫϦʔϯͳͷΛબ͢Δ • কདྷͷγεςϜ֦ுΛఆͯ͠ɺ֦ு͕༰қͳͷΛબ͢Δ • γεςϜઃܭΛվળ͢ΔͨΊʹ࣌ؒΛࢿ͢Δ •
࠷Ͱͳ͘ɺ࠷ળΛࢦ͢Ξϓϩʔν 42 ࢀߟ: ʰA Philosophy of Software Designʱ
ઓུతϓϩάϥϛϯάͷྫ 1 - খنͷվम ઓུతϓϩάϥϛϯά 43 • ཁ݅ɿ৽ΛఆՁͷ10%Ҿ͖Ͱൢച͠·͢ • ϚʔέςΟϯάνʔϜʹΑΔͱɺࠓޙ༷ʑͳΩϟϯϖʔϯΛల։͍ͨ͠Β͍͠
• ͢ͰʹܭըࡁΈͷͷɺۀքͰҰൠతͳΩϟϯϖʔϯʹ͍ͭͯݕ౼ͨ͠ • ׂҾΛཧ͢ΔΈΛઃܭͯ͠ɺͦͷϩδοΫΛผ్࣮͢Δ • จͷλΠϛϯάͰΩϟϯϖʔϯΛద༻ͯ͠ɺׂҾΛ࣮ݱ͢Δ • ͦͷޙɺΞτϨοτΛ30%Ҿ͖Ͱൢച͢Δࡍগ͠ͷվमͰ࣮ݱͰ͖ͨ ੜ AI Λ͏߹ ઃܭίϯηϓτΛ͑ͯนଧͪʹ
ઓུతϓϩάϥϛϯάͷྫ 2 - ػೳՃ ઓུతϓϩάϥϛϯά • ཁ݅ɿͷϨϏϡʔػೳΛՃ͠·͢ • Review ϞσϧΛఆٛͯ͠ɺѻ͏Α͏ʹͨ͠
• ਓؾେྔͷϨϏϡʔ͕͋ͬͯද͕ࣔ͘ͳΔ͜ͱ͕ ݒ೦͞Ε͕ͨɺಠཱͯ͠ѻ͑ͨͨΊԆಡΈࠐΈ͢Δ͜ͱ͕Ͱ͖ͨ • ݸʑͷϨϏϡʔʹରͯ͠ෆదͳ༰ΛϑΟϧλϦϯά͢ΔͳͲɺ αϙʔτνʔϜ͔Βͷཁʹૉૣ͘Ԡ͑Δ͜ͱ͕Ͱ͖ͨ 44
ઓज़తϓϩάϥϛϯάѱ͔ʁ ઓज़తϓϩάϥϛϯάͱઓུతϓϩάϥϛϯά ϦεΫड༰ͯ͠બ͢Δ߹͋ΔʢͦΕ͕ྑ͍ͱݴ͍ͬͯͳ͍ʣ 1. ڝ߹ΑΓઌʹࢢαʔϏεΛೖ͍ͨ͠ 💨 2. PoC ͱͯ͠ͷ࣮Ͱ͋Γɺ࣮֬ʹ͍ࣺͯͷίʔυͰ͋Δ •
ʢԟʑʹͯͦ͠ͷ··ϩʔϯν͞ΕΔͱ͍͏͋Δ🙉 ʣ 3. Hot fi x 🚑 45 ࢀߟ: ʰA Philosophy of Software Designʱ ͕࣌ؒܦͭʹͭΕɺઓུతΞϓϩʔνͷਐḿ͕ٯస͢Δ
46 ʰιϑτΣΞΞʔΩςΫνϟͷجૅʱ “ΞʔΩςΫνϟʹਖ਼ղؒҧ͍ͳ͍ɻ ͨͩτϨʔυΦϑ͕͋Δ͚ͩͩ.” - Neal Ford
·ͱΊ
ࠓճͷςʔϚͰ͋Δ“ղܾʹཱͭϞσϧ”ͱ ·ͱΊ • ରυϝΠϯͷϏδωεϧʔϧ͕໌֬ʹө͞Ε͍ͯΔ • σʔλͱϩδοΫ͕·ͱΊΒΕɺநσʔλܕͱͯ͠ઃܭ͞Ε͍ͯΔ • ٸͳࢢͷมԽϏδωεཁٻʹରԠͰ͖Δॊೈ͞Λ࣋ͭ • ࠶ར༻ੑʹ༏ΕɺҙຯతͳίʔυͷॏෳΛ͙
48
υϝΠϯϑΝʔετͱ ·ͱΊ • ٕज़తͳ՝DBઃܭΑΓઌʹɺղܾ͍ͨ͠ྖҬʢυϝΠϯʣͱͦ ͷෳࡶੑʹֶ͍ͭͯͼɺͦͷࣝΛத৺ʹઃܭ͢ΔΞϓϩʔν • αϒυϝΠϯΛੳͯ͠ɺڥք͚ΒΕͨίϯςΩετΛઃܭ͢Δ • ͦͷதͰར༻͢ΔυϝΠϯϞσϧΛઃܭ͢Δ •
దͳۀཧղͷޙʹɺΑΓྑ͍ઃܭ͕ՄೳʹͳΔʢ՝ͷղ૾Λ্͛Δʣ • શ͘ҟͳΔઃܭʹͳΔ͜ͱ͑͋͞Δ • DDD ͷઓज़తઃܭͷϓϥΫςΟεͷΈΛઌʹಋೖ͢Δέʔε… • ཧநͷґଘɺִͳͲɺݟ௨͠ΛΑ͘͢Δҙຯ͋Δ • ෆ۩߹ΛੜΈग़͢γεςϜɺϞσϧʹͳΔϦεΫΛΑΓଟ๊͑͘Δ 49
͍͞͝ʹ ·ͱΊ • AI͕ίʔυΛಡΜͰɺॻ͍ͯɺϨϏϡʔ·Ͱ͢Δ࣌ɻࢲ͕ͨͪશͯΛख ͰରԠ͢Δػձݮ͖ͬͯ·ͨ͠ɻ͜ͷઌͬͱݮΔͰ͠ΐ͏ɻ • ࠓճͷྫͷΑ͏ʹɺAI ʹطଘͷϦιʔεΛఏڙͯ͠ɺ͜͏͍ͬͨΛ ղܾ͍ͨ͠ͱ͑Δͱɺଟ͘ͷ߹ʹઓज़తϓϩάϥϛϯάΛ࢝Ί·͢ •
࣮ࡍʹಈ࡞͢Δͷͷɺͬͪ͜ΛཱͯΔͱཱ͕͋ͬͪͨͣɺόάΛ௵ͯ͠ ·ͨผͷՕॴͰόάΔɺͱ͍ͬͨঢ়گʹͳΓ͕ͪͰ͢ɻݱ࣌Ͱɻ • ࢲ͕ͨͪυϝΠϯΛੳͯ͠ɺઃܭ͢Εɺͬͱ AI Λ׆༻Ͱ͖·͢ • AI ͱγεςϜΛ࡞Δ࣌ɺԿΛղܾ͍ͨ͠ͷ͔Λؾʹͯ͠Έ͍ͯͩ͘͞ 50